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105, CQMPOSnmNS sus sTltu'rso FOR 'nnssniu C Y Examiner BOATING OR PLASTIC THOMAS GRAHAM LIEBENAU AND ALFRED GL'HEANEY, OF PLAINVILLE,

CONNECTICUT.

I Letters Patent No. 101,891, dated 12, 1870.

IMPROVEMENT IR Elm TOR max-mus flznBehedulontenodtolnthouIuttenPatoatmdm-Hngputofthenme To all whom it may concern:

Be it known that we, TaoxAs GRAHAM Lmnn- RAU and ALFRED G. Hmmay, of Plainville, in the county of Hartford and in the State of Connecticut,

i have invented certain new and useful Improvements The base of our dials is zinc, which is prepared for the reception of the enamel by the application to or upon its surface of a coat of sizing, compomd of isinglass, two ounces; parchment, two ounces; and water,

one quart; which articles are mixed together and boiled until reduced in quantity to one pint, when the liquid is ready for use.

After the coat of sizing has become thoroughly dry, we cover the same with a coat of .enam'el, composed After standing from four to six hours the enamel becomes hard, and is ready for polishing.

In order to give a bluish tinge to the enamel and to render its white color more durable, we add to the above-named quantity about five grains of indigo.

The especial advantages possessed by this invention are that by its use the cost of material employed is materially reduced, a-better quality of work secured, and a finished dial produced in a much shorter time than has heretofore been possible.

Having thus fully set forth the nature and merits of our invention,

What we claim as; new, and desire to secure by Let 'ters Patent, is-

The hereinbefore-described sizing, composed of him glass and parchment, substantially as and for the purposespecified. 7

Also, the combination of soluble glass, oil of turpentine, and the oxides of antimony, zinc, and arsenic, or their equivalents, substantially as shown and for the purpose set forth.

In testimony that we claim the foregoing, we have hereunto set our hands this 18th day of March, 1870.

El. GRAHAM LIEBEN AU.

of soluble 1 three partsoil of tur entine one A. G. HEANEY. part; an one part each of the oxides of ntlmon Witnesses:

zing and arseni which are ground togetier and ap- HENRY D. STANLEY,

| 4 in a qul state. B. A. STANLEY. 

